[llvm] 10cfd54 - [AArch64] Correct defs and uses on {PAC,AUT}I{A,B}171615 (#123354)

[via llvm-commits]

Author: Kristof Beyls
Date: 2025-01-18T07:56:15+01:00
New Revision: 10cfd54e6aedc9c97bad84d6f8d32910f591cd26

URL: https://github.com/llvm/llvm-project/commit/10cfd54e6aedc9c97bad84d6f8d32910f591cd26
DIFF: https://github.com/llvm/llvm-project/commit/10cfd54e6aedc9c97bad84d6f8d32910f591cd26.diff

LOG: [AArch64] Correct defs and uses on {PAC,AUT}I{A,B}171615 (#123354)

I'm not adding tests for this, as I don't think we usually have tests to
verify correct description of defs and uses in instructions?

This fix will be tested when #122304 lands, as one of the regression
tests in that PR fails without this fix.

Added: 
    

Modified: 
    llvm/lib/Target/AArch64/AArch64InstrInfo.td

Removed: 
    


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diff  --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.td b/llvm/lib/Target/AArch64/AArch64InstrInfo.td
index 8215f3a4fdae1e..40a6b8e4c8e640 100644
--- a/llvm/lib/Target/AArch64/AArch64InstrInfo.td
+++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.td
@@ -2030,6 +2030,8 @@ let Predicates = [HasPAuthLR] in {
     //                              opcode2, opcode,   asm
     def AUTIASPPCr : SignAuthOneReg<0b00001, 0b100100, "autiasppcr">;
     def AUTIBSPPCr : SignAuthOneReg<0b00001, 0b100101, "autibsppcr">;
+  }
+  let Defs = [X17], Uses = [X15, X16, X17] in {
     //                                  opcode2, opcode,   asm
     def PACIA171615 : SignAuthFixedRegs<0b00001, 0b100010, "pacia171615">;
     def PACIB171615 : SignAuthFixedRegs<0b00001, 0b100011, "pacib171615">;